Which of the following statements about NAD+ is TRUE?
A) NAD+ is reduced to NADH during glycolysis, pyruvate oxidation, and the citric acid cycle.
B) NAD+ has more chemical energy than NADH.
C) NAD+ is oxidized by the action of hydrogenases.
D) NAD+ can donate electrons for use in oxidative phosphorylation.
E) In the absence of NAD+, glycolysis can still function.

Question

Quizplus · Accepted Answer

NAD+ is indeed reduced to NADH during glycolysis, pyruvate oxidation, and the citric acid cycle. This is a crucial step in the process of cellular respiration, as it allows the transfer of electrons to other electron carriers and ultimately allows for the production of ATP. Options B, C, and D are false statements. Option E is partially true, as glycolysis can still occur in the absence of oxygen, but it is not dependent on the presence of NAD+.

Which of the Following Statements About NAD+ Is TRUE